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1/**
2 * file phonet.h
3 *
4 * Phonet sockets kernel interface
5 *
6 * Copyright (C) 2008 Nokia Corporation. All rights reserved.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 */
22
23#ifndef LINUX_PHONET_H
24#define LINUX_PHONET_H
25
26/* Automatic protocol selection */
27#define PN_PROTO_TRANSPORT 0
28/* Phonet datagram socket */
29#define PN_PROTO_PHONET 1
30/* Phonet pipe */
31#define PN_PROTO_PIPE 2
32#define PHONET_NPROTO 3
33
34/* Socket options for SOL_PNPIPE level */
35#define PNPIPE_ENCAP 1
36#define PNPIPE_IFINDEX 2
37
38#define PNADDR_ANY 0
39#define PNPORT_RESOURCE_ROUTING 0
40
41/* Values for PNPIPE_ENCAP option */
42#define PNPIPE_ENCAP_NONE 0
43#define PNPIPE_ENCAP_IP 1
44
45/* ioctls */
46#define SIOCPNGETOBJECT (SIOCPROTOPRIVATE + 0)
47
48/* Phonet protocol header */
49struct phonethdr {
50 __u8 pn_rdev;
51 __u8 pn_sdev;
52 __u8 pn_res;
53 __be16 pn_length;
54 __u8 pn_robj;
55 __u8 pn_sobj;
56} __attribute__((packed));
57
58/* Common Phonet payload header */
59struct phonetmsg {
60 __u8 pn_trans_id; /* transaction ID */
61 __u8 pn_msg_id; /* message type */
62 union {
63 struct {
64 __u8 pn_submsg_id; /* message subtype */
65 __u8 pn_data[5];
66 } base;
67 struct {
68 __u16 pn_e_res_id; /* extended resource ID */
69 __u8 pn_e_submsg_id; /* message subtype */
70 __u8 pn_e_data[3];
71 } ext;
72 } pn_msg_u;
73};
74#define PN_COMMON_MESSAGE 0xF0
75#define PN_PREFIX 0xE0 /* resource for extended messages */
76#define pn_submsg_id pn_msg_u.base.pn_submsg_id
77#define pn_e_submsg_id pn_msg_u.ext.pn_e_submsg_id
78#define pn_e_res_id pn_msg_u.ext.pn_e_res_id
79#define pn_data pn_msg_u.base.pn_data
80#define pn_e_data pn_msg_u.ext.pn_e_data
81
82/* data for unreachable errors */
83#define PN_COMM_SERVICE_NOT_IDENTIFIED_RESP 0x01
84#define PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP 0x14
85#define pn_orig_msg_id pn_data[0]
86#define pn_status pn_data[1]
87#define pn_e_orig_msg_id pn_e_data[0]
88#define pn_e_status pn_e_data[1]
89
90/* Phonet socket address structure */
91struct sockaddr_pn {
92 sa_family_t spn_family;
93 __u8 spn_obj;
94 __u8 spn_dev;
95 __u8 spn_resource;
96 __u8 spn_zero[sizeof(struct sockaddr) - sizeof(sa_family_t) - 3];
97} __attribute__ ((packed));
98
99static inline __u16 pn_object(__u8 addr, __u16 port)
100{
101 return (addr << 8) | (port & 0x3ff);
102}
103
104static inline __u8 pn_obj(__u16 handle)
105{
106 return handle & 0xff;
107}
108
109static inline __u8 pn_dev(__u16 handle)
110{
111 return handle >> 8;
112}
113
114static inline __u16 pn_port(__u16 handle)
115{
116 return handle & 0x3ff;
117}
118
119static inline __u8 pn_addr(__u16 handle)
120{
121 return (handle >> 8) & 0xfc;
122}
123
124static inline void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr)
125{
126 spn->spn_dev &= 0x03;
127 spn->spn_dev |= addr & 0xfc;
128}
129
130static inline void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port)
131{
132 spn->spn_dev &= 0xfc;
133 spn->spn_dev |= (port >> 8) & 0x03;
134 spn->spn_obj = port & 0xff;
135}
136
137static inline void pn_sockaddr_set_object(struct sockaddr_pn *spn,
138 __u16 handle)
139{
140 spn->spn_dev = pn_dev(handle);
141 spn->spn_obj = pn_obj(handle);
142}
143
144static inline void pn_sockaddr_set_resource(struct sockaddr_pn *spn,
145 __u8 resource)
146{
147 spn->spn_resource = resource;
148}
149
150static inline __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn)
151{
152 return spn->spn_dev & 0xfc;
153}
154
155static inline __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn)
156{
157 return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj;
158}
159
160static inline __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn)
161{
162 return pn_object(spn->spn_dev, spn->spn_obj);
163}
164
165static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn)
166{
167 return spn->spn_resource;
168}
169
170#endif